1 Reply Latest reply on Mar 15, 2012 9:10 AM by spectral

    Unable to send the correct cl::Buffer to my kernel !!!

    spectral

      Hi,

       

      I contact you because, since a few days I have a strange bug with my code. What is really strange is that this code is really old and has not changed !

       

      So, I send several cl::Buffer to a kernel and when I "print" the values of this buffer, they are completely ugly !

       

      Here is the code to send the data :

       

      FilmResponse* curve = &FILM_RESPONSE[_controller->FilmResponse];
      clBuffer_FilmResponseR = new cl::Buffer(*_context, CL_MEM_READ_ONLY | CL_MEM_USE_HOST_PTR, sizeof(float) * FILM_RESPONSE_SIZE, (void*)curve->B_R);
      //_queue->enqueueWriteBuffer(*_clBuffer_FilmResponseR->GetBuffer(), CL_TRUE, 0, sizeof(float) * FILM_RESPONSE_SIZE, curve->B_R);
      
      _kernel__ToneMapping->setArg(1, *clBuffer_FilmResponseR);
      

       

      Here is the signature of my kernel :

       

      __kernel
      void kernel__ToneMapping(
                __constant __read_only clFilmSettings* filmSettings,
                __global __read_only float* responseCurveR,
                __global __read_only float* responseCurveG,
                __global __read_only float* responseCurveB, 
                __global uchar4* rgba,
                __global clIBAccumItem* ibAccum,
                int workAmount)
      

       

      What is really strange is that I check the values in curve->B_R before sending it to the kernel... and they are correct, so I suppose that my curve->B_R is not corrupted !

       

      I have test this with Intel SDK/NVidia SDK/AMD SDK and I always have this problem. So, it is NOT a SDK bug but something strange is happening on my side :-P

       

      Does someone has an idea ?